DE69824182D1 - PROCESS FOR THE PREPARATION OF CHOLESTERIC LIQUID CRYSTAL BY STEREOSELECTIVE REKRISTALLIZATION - Google Patents

PROCESS FOR THE PREPARATION OF CHOLESTERIC LIQUID CRYSTAL BY STEREOSELECTIVE REKRISTALLIZATION

Info

Publication number
DE69824182D1
DE69824182D1 DE69824182T DE69824182T DE69824182D1 DE 69824182 D1 DE69824182 D1 DE 69824182D1 DE 69824182 T DE69824182 T DE 69824182T DE 69824182 T DE69824182 T DE 69824182T DE 69824182 D1 DE69824182 D1 DE 69824182D1
Authority
DE
Germany
Prior art keywords
stereoselective
liquid crystal
cholesteric liquid
toluene
rekristallization
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69824182T
Other languages
German (de)
Inventor
Maria M Perez-Mendez
Rocha Carlos Marco
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Consejo Superior de Investigaciones Cientificas CSIC
Original Assignee
Consejo Superior de Investigaciones Cientificas CSIC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Consejo Superior de Investigaciones Cientificas CSIC filed Critical Consejo Superior de Investigaciones Cientificas CSIC
Application granted granted Critical
Publication of DE69824182D1 publication Critical patent/DE69824182D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/38—Polymers
    • C09K19/3804—Polymers with mesogenic groups in the main chain
    • C09K19/3809—Polyesters; Polyester derivatives, e.g. polyamides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/60—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from the reaction of a mixture of hydroxy carboxylic acids, polycarboxylic acids and polyhydroxy compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Liquid Crystal Substances (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Steroid Compounds (AREA)
  • Liquid Crystal (AREA)

Abstract

Process for synthesizing polymers +, PTOBEE (C26H20O8)n and PTOBDME (C34H36O8)n, with the addition of acid dichloride and DL-treo-1,2-butanediol in Cl-naphtalene and DL-1,2-dodecanediol with diphenyl oxide, respectively, by passing them through a nitrogen stream at room temperature, heating the mixture, settling in toluene the mixture and filtering. In the resulting settling toluene, the polymer precipitates the enantiomer (-) PTOBEE. The compounds obtained are of the cholesteric liquid crystal type, obtained by stereoselective recrystallization in toluene.
DE69824182T 1997-01-20 1998-01-16 PROCESS FOR THE PREPARATION OF CHOLESTERIC LIQUID CRYSTAL BY STEREOSELECTIVE REKRISTALLIZATION Expired - Lifetime DE69824182D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES009700100A ES2125818B1 (en) 1997-01-20 1997-01-20 PROCEDURE FOR OBTAINING CHOLESTERIC LIQUID CRYSTALS BY STEREOSELECTIVE RECRISTALIZATION.
PCT/ES1998/000006 WO1998031771A1 (en) 1997-01-20 1998-01-16 Process for obtaining cholesteric liquid crystals by stereoselective recrystallization

Publications (1)

Publication Number Publication Date
DE69824182D1 true DE69824182D1 (en) 2004-07-01

Family

ID=8297923

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69824182T Expired - Lifetime DE69824182D1 (en) 1997-01-20 1998-01-16 PROCESS FOR THE PREPARATION OF CHOLESTERIC LIQUID CRYSTAL BY STEREOSELECTIVE REKRISTALLIZATION

Country Status (9)

Country Link
US (1) US6165382A (en)
EP (1) EP1004650B1 (en)
JP (1) JP2001513827A (en)
AT (1) ATE267860T1 (en)
AU (1) AU739076B2 (en)
CA (1) CA2278568A1 (en)
DE (1) DE69824182D1 (en)
ES (1) ES2125818B1 (en)
WO (1) WO1998031771A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD787945S1 (en) 2014-06-03 2017-05-30 Seventh Generation Ventures, Inc. Bottle
USD742175S1 (en) 2014-06-03 2015-11-03 Seventh Generation Ventures, Inc. Bottle
USD796261S1 (en) 2015-02-13 2017-09-05 Seventh Generation Ventures, Inc. Bottle
USD789745S1 (en) 2015-02-13 2017-06-20 Seventh Generation Ventures, Inc. Bottle
USD753791S1 (en) 2015-02-13 2016-04-12 Seventh Generation Ventures, Inc. Bottle top with filter
USD794392S1 (en) 2015-02-13 2017-08-15 Seventh Generation Ventures, Inc. Bottle
USD823061S1 (en) 2016-08-19 2018-07-17 O2C Raleigh, Llc Bottle with closure
USD812966S1 (en) 2016-08-19 2018-03-20 O2C Raleigh, Llc Cap for a container
USD878571S1 (en) 2017-11-09 2020-03-17 Neomed, Inc. Collection and feeding bottle
USD878572S1 (en) 2017-11-09 2020-03-17 Neomed, Inc. Collection and feeding bottle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4412059A (en) * 1980-08-20 1983-10-25 Duke University High modulus cholesteric mesophase polymers
JPS6254724A (en) * 1985-09-04 1987-03-10 Nippon Oil Co Ltd Production of cholesteric liquid crystal copolyester
JPS636021A (en) * 1986-06-26 1988-01-12 Nippon Oil Co Ltd Cholesteric liquid crystal polyester
DE69635219T2 (en) * 1995-04-12 2006-07-13 Sumitomo Chemical Co., Ltd. Film made of a liquid-crystalline polyester composition
DE19718293A1 (en) * 1997-04-30 1999-03-18 Consortium Elektrochem Ind Process for the production of three-dimensionally cross-linked polymeric materials with broad cholesteric reflection bands and filters, reflectors and polarizers produced by this process

Also Published As

Publication number Publication date
ES2125818A1 (en) 1999-03-01
CA2278568A1 (en) 1998-07-23
AU739076B2 (en) 2001-10-04
WO1998031771A1 (en) 1998-07-23
ES2125818B1 (en) 2000-02-16
AU5486398A (en) 1998-08-07
ATE267860T1 (en) 2004-06-15
US6165382A (en) 2000-12-26
EP1004650B1 (en) 2004-05-26
EP1004650A1 (en) 2000-05-31
JP2001513827A (en) 2001-09-04

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